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Cyclization of N-(1,1-Dimethyl-2-propynyl)acetamide (I) to 2,2,3,5,5,6-Hexamethyl-2,5-dihydropyrazine (II).

โœ Scribed by A. M. Vasil'tsov; E. Yu. Shmidt; A. I. Mikhaleva; A. B. Zaitseva; J.-D. Arndt; J. Henckelmann; B. A. Trofimov


Publisher
John Wiley and Sons
Year
2003
Weight
90 KB
Volume
34
Category
Article
ISSN
0931-7597

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1,5-dimethyl-2,3,3,4-tetrachloro-1,5,2,4
โœ J. Krill; I. V. Shevchenko; A. Fischer; P. G. Jones; R. Schmutzler ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 351 KB ๐Ÿ‘ 1 views

The title compound 1 was allowed to react with catechol, 2,3-dihydroxynaphthalene, tetrabromocatechol, resorcinol, saligenin, and 3,5-di-tert-butylcatechol in the presence of triethylamine to form compounds 4a-4d and 4f. Whereas the catechol derivative 4a, the naphthol derivative 4b, and the tetrabr